Class: GameOfLife::World

Inherits:
Object
  • Object
show all
Defined in:
lib/game-of-life/world.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(width, height) ⇒ World

Returns a new instance of World.



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# File 'lib/game-of-life/world.rb', line 7

def initialize(width,height)
  @width, @height = width, height
  setup(false)
end

Instance Attribute Details

#board ⇒ Object

Returns the value of attribute board.



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# File 'lib/game-of-life/world.rb', line 5

def board
  @board
end

#cells ⇒ Object

Returns the value of attribute cells.



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# File 'lib/game-of-life/world.rb', line 5

def cells
  @cells
end

Instance Method Details

#dead_cells ⇒ Object 



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# File 'lib/game-of-life/world.rb', line 21

def dead_cells
  @cells.select { |cell| cell.dead? }
end

#get(x, y) ⇒ Object 



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# File 'lib/game-of-life/world.rb', line 29

def get(x,y)
  @board.element(x,y)
end

#kill(x, y) ⇒ Object 



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# File 'lib/game-of-life/world.rb', line 25

def kill(x,y)
  @board.element(x,y).die!
end

#live_cells ⇒ Object 



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# File 'lib/game-of-life/world.rb', line 17

def live_cells
  @cells.select { |cell| cell.alive? }
end

#live_neighbours_of(x, y) ⇒ Object 



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# File 'lib/game-of-life/world.rb', line 37

def live_neighbours_of(x,y)
  live_neighbours = []

  # up-left
  if x-1 >= 0 and y+1 <= @height-1
    neighbour = get(x-1,y+1)
    live_neighbours << neighbour if neighbour.alive?
  end

  # up
  if y+1 <= @height-1
    neighbour = get(x,y+1)
    live_neighbours << neighbour if neighbour.alive?
  end

  # up-right
  if x+1 <= @width-1 and y+1 <= @height-1
    neighbour = get(x+1,y+1)
    live_neighbours << neighbour if neighbour.alive?
  end

  # left
  if x-1 >= 0
    neighbour = get(x-1,y)
    live_neighbours << neighbour if neighbour.alive?
  end

  # right
  if x+1 <= @width-1
    neighbour = get(x+1,y)
    live_neighbours << neighbour if neighbour.alive?
  end

  # down-left
  if x-1 >= 0 and y-1 >= 0
    neighbour = get(x-1,y-1)
    live_neighbours << neighbour if neighbour.alive?
  end

  # down
  if y-1 >= 0
    neighbour = get(x,y-1)
    live_neighbours << neighbour if neighbour.alive?
  end

  # down-right
  if x+1 <= @width-1 and y-1 >= 0
    neighbour = get(x+1,y-1)
    live_neighbours << neighbour if neighbour.alive?
  end

  live_neighbours
end

#revive(x, y) ⇒ Object 



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# File 'lib/game-of-life/world.rb', line 33

def revive(x,y)
  @board.element(x,y).reborn!
end

#rotate! ⇒ Object 



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# File 'lib/game-of-life/world.rb', line 91

def rotate!
  future_alive_cells = []
  future_dead_cells = []

  @cells.each do |cell|
    live_neighbours = live_neighbours_of(cell.x,cell.y)

    future_dead_cells << cell if apply_rule_1(cell,live_neighbours)
    future_alive_cells << cell if apply_rule_2(cell,live_neighbours)
    future_dead_cells << cell if apply_rule_3(cell,live_neighbours)
    future_alive_cells << cell if apply_rule_4(cell,live_neighbours)
  end

  update_board(future_alive_cells,future_dead_cells)
  update_cells
end

#seed! ⇒ Object 



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# File 'lib/game-of-life/world.rb', line 12

def seed!
  clean_cells
  setup(true)
end